כיצד לחשב את Roof Pitch Angle

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Roof pitch describes slope using rise:run ratio or angle. Calculating pitch angle from measurements helps with roofing material selection and water drainage analysis.

נוסחה

Pitch angle = arctan(rise / run); also expressed as X:12 ratio

מדריך שלב אחר שלב

1Measure vertical rise and horizontal run of roof section
2Calculate rise/run ratio
3Convert to angle or standard 12-inch run notation

Worked Examples

קלט

Rise: 6 ft, Run: 12 ft

תוצאה

Pitch = 6:12 or 26.6°

Common residential roof angle

Common Mistakes to Avoid

✕Measuring along sloped surface instead of horizontal/vertical
✕Confusing rise and run

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